BBC News, Washington
by Jasmine Taylor-Coleman
June 15, 2016
Reports that Orlando gunman Omar Mateen had been a regular at the gay nightclub he attacked and used gay dating apps have led to speculation that he was motivated by internalised homophobia. But what is it, and could it have anything to do with the worst shooting in recent US history?
Investigators are still trying to establish what led a 29-year-old security guard from Florida to murder 49 people and injure dozens more as they partied in popular gay nightclub Pulse.
They are examining indications Mateen was inspired by radical Islamism, following revelations that he pledged allegiance to the Islamic State group and the FBI had investigated him twice previously for terror links.
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